package dao;

import java.sql.Timestamp;
import java.util.List;

import org.hibernate.LockOptions;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;

import static org.hibernate.criterion.Example.create;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.transaction.annotation.Transactional;

import bean.Fileinfo;

/**
 * A data access object (DAO) providing persistence and search support for
 * Fileinfo entities. Transaction control of the save(), update() and delete()
 * operations can directly support Spring container-managed transactions or they
 * can be augmented to handle user-managed Spring transactions. Each of these
 * methods provides additional information for how to configure it for the
 * desired type of transaction control.
 * 
 * @see dao.Fileinfo
 * @author MyEclipse Persistence Tools
 */
@Transactional
public class FileinfoDAO {
	private static final Logger log = LoggerFactory
			.getLogger(FileinfoDAO.class);
	// property constants
	public static final String FILE_NAME = "fileName";
	public static final String BELONG_TO = "belongTo";
	public static final String FILE_PATH = "filePath";
	public static final String FILE_SIZE = "fileSize";
	public static final String DOWNLOAD_COUNT = "downloadCount";
	public static final String UPLOAD_USER = "uploadUser";
	public static final String FILE_PERMISSION = "filePermission";
	public static final String FILE_DESC = "fileDesc";

	private SessionFactory sessionFactory;

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	private Session getCurrentSession() {
		return sessionFactory.getCurrentSession();
	}

	protected void initDao() {
		// do nothing
	}

	public void save(Fileinfo transientInstance) {
		log.debug("saving Fileinfo instance");
		try {
			getCurrentSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Fileinfo persistentInstance) {
		log.debug("deleting Fileinfo instance");
		try {
			getCurrentSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Fileinfo findById(java.lang.String id) {
		log.debug("getting Fileinfo instance with id: " + id);
		try {
			Fileinfo instance = (Fileinfo) getCurrentSession().get(
					"bean.Fileinfo", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List<Fileinfo> findByExample(Fileinfo instance) {
		log.debug("finding Fileinfo instance by example");
		try {
			List<Fileinfo> results = (List<Fileinfo>) getCurrentSession()
					.createCriteria("dao.Fileinfo").add(create(instance))
					.list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Fileinfo instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Fileinfo as model where model."
					+ propertyName + "= ?";
			Query queryObject = getCurrentSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List<Fileinfo> findByFileName(Object fileName) {
		return findByProperty(FILE_NAME, fileName);
	}

	public List<Fileinfo> findByBelongTo(Object belongTo) {
		return findByProperty(BELONG_TO, belongTo);
	}

	public List<Fileinfo> findByFilePath(Object filePath) {
		return findByProperty(FILE_PATH, filePath);
	}

	public List<Fileinfo> findByFileSize(Object fileSize) {
		return findByProperty(FILE_SIZE, fileSize);
	}

	public List<Fileinfo> findByDownloadCount(Object downloadCount) {
		return findByProperty(DOWNLOAD_COUNT, downloadCount);
	}

	public List<Fileinfo> findByUploadUser(Object uploadUser) {
		return findByProperty(UPLOAD_USER, uploadUser);
	}

	public List<Fileinfo> findByFilePermission(Object filePermission) {
		return findByProperty(FILE_PERMISSION, filePermission);
	}

	public List<Fileinfo> findByFileDesc(Object fileDesc) {
		return findByProperty(FILE_DESC, fileDesc);
	}

	public List findAll() {
		log.debug("finding all Fileinfo instances");
		try {
			String queryString = "from Fileinfo";
			Query queryObject = getCurrentSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Fileinfo merge(Fileinfo detachedInstance) {
		log.debug("merging Fileinfo instance");
		try {
			Fileinfo result = (Fileinfo) getCurrentSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Fileinfo instance) {
		log.debug("attaching dirty Fileinfo instance");
		try {
			getCurrentSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Fileinfo instance) {
		log.debug("attaching clean Fileinfo instance");
		try {
			getCurrentSession().buildLockRequest(LockOptions.NONE).lock(
					instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static FileinfoDAO getFromApplicationContext(ApplicationContext ctx) {
		return (FileinfoDAO) ctx.getBean("FileinfoDAO");
	}
}